Hoisting device.



No. 784,586. PATENTED MAR. 14, 1905.

' RQMGGAHEY.

HOISTING DEVICE.

APPLIUATION FILED MAR.9.19o4.

s SHEETS-SHEET 1.

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W/TNESSES: M/VNTUR ATTUHNEYS No. 784,586. PATENTED MAR. 14, 1905. R.MoGAI-IEY.

' HOISTING DEVICE. APPLIUATION FILED MAR.9,1904.

3 SHEETS-SHEET 2.

77W/ WITNESSES: Q/f? www A TTORNEYS PATENTED MAR. 14, 1905.

R. MCGAHEY. HOISTING DEVICE.

APPLIOATION FILED mn.s,19o4.

3 SHEETS-SHEET 3.

WITNESSES: WCM

Vtional detail substantially on the line 5 5 in UNTTED STATES PatentedMarch 14, 1905.

RICHARDMCGAHEY, OF vWALLA W ALLA, WASHINGTON.

HOISTING DEVICE.

SPECIFICATION forming part of Letters Patent N o. 784,586, dated March14., 1905.

Application filed March 9, 1904. Serial No. 197,297.

To {1J/Z whom, it may cm1/cern: l

Be it known that I, RICHARD MCGAHEY, a i citizen of the United States,and aresident of l/Valla Walla, in the county of Talla Talla and Stateof Washington, have invented a new and Improved H oisting Device, ofwhich the following is a full, clear, and exact description.

The invention relates to means for hoisting material from one point toanother one and depositing it, and has forits object to provide noveldetails of construction for a hoisting device that adapt it for veryconvenient service for the elevation of material of dierent kinds andthat render it especiallyT well adapted for the hoisting of grain inbags and the piling of such packages of material in tiers for compactstowage in a warehouse in an expeditious and safe manner and also effectthe lowering and transfer of such material to a wagon or car, asoccasion may require.

The invention consists in the novel construction and combination ofparts, as is hereinafter described, and defined in the appended claims.

Reference is to be had to the accompanying drawings, forming a part ofthis specification, in which similar characters of reference indicatecorresponding parts in all the figures.

Figure 1 is a perspective view of one form of the improved hoistingdevice arranged for operation by means of a power-generating motor. Fig.2 is a side view of the preferred form of apparatus seen in direction ofthe arrow a in Fig. 3. Fig. 3 is a side View of the same seen indirection of the arrow fr," in Fig. Q. Fig. 4 is a detached perspectiveview of a crane employed. Fig. 5 is a longitudinal sec- Fig. 6. Fig. 6is a side view of the lower portion of a derrick-mast employed; and Fig.7 is a longitudinal sectional view of a telescoping derrick-mast, takensubstantially on the line 7 7 in Fig. 2.

ln the drawings that represent the construction and operation of thedevice, 10 indicates a preferably rectangular platform that may berendered portable by providing it with a suitable number of casters,(not shown,) which adapt the same for convenient transfer from one pointto another. On the platform 10 a two-part derrick-mast is erected at asuitable point. the lower section 11 of said mast being hollow andpreferably rectangular in crosssection, either wood or metal beingemployed f for its construction. The hollow section 11 of thederrick-mast is securely held in a vertical position by four metalbrace-bars 12, that are secured by their upper ends upon the sides ofthe said mast-section and at their lower ends upon the platform 10 bybolts a, that engage pads formed on the ends of the braces, as isclearly shown in Figs. 1, 2, and 3. The upper section 13 of thederrick-mast is fitted to slide in the lower section 11 and when inplace therein extends a suitable height above said lower section.

In one side wall of the upper mast-section 18 a longitudinal groove I)is formed, that preferably extends' from the lower end thereof to apoint somewhat above the upper end of the lower section 11 when theupper section is completely lowered in the mast-section 11. Upon thelower end of the mast-section 13 one end of a iiexible connection, suchas a rope 14, is aflixed, as is indicated in Figs. 5 and 6, and thenceextends upward within the groove L. A grooved pulley c is held to rotatein a bracketframe c', that is secured adjacent to a slotopening in theupper portion of a side of the lower mast-section 11, thus disposing thepulley opposite the groove L in the upper mastsection 13 and permittingthe upper portion of the rope 14 to be extended through the slotopeningand in contact with the upperA side of the grooved periphery of thepulley c, so that the extended portion of the rope may hang pendenttherefrom, as shown in Figs. 2 and 3. In the hollow mast-section 11spaced perforations (l are formed, which extend through two oppositeside walls of the same. The upper mast-section 18 may be drawn upward bymanipulation of the pendent end portion of the rope 14, and thus give adesired elevation thereto, and to maintain the mast-section in elevatedadjustment a stopbolt e is inserted in a perforation d, and themast-section 13 is then seated upon said bolt.

At opposite sides of the derrick-mast section 11 and suitably spacedtherefrom two similar windlass frame-posts 16 are respectively erected'and secured upon the platform 10, these posts being braced bytransversebars 17, that are bolted upon the mast-section 11 near theirlongitudinal centers, as shown at g in Figs. 2 and 3, and at the ends.upon the edges of the posts, as appears in said figures. In suitablebox-bearings t, secured oppositely in the posts 15 16 near their upperextremities, and in alining boxes t, secured in opposite perforationsinside walls of the mast-section 11, a windlass-shaft 18 is journaled,as shown clearly in Fig. 7, said shaft passing loosely through alongitudinal slot e', extending from the lower end of the mast-section13 for a proper length toward the upper end of the mast-section, andpreferably at its transverse center. As shown in Figs. 3 and 7, abracebar 19 is extended diagonally between the .posts 15 16, passing'through perforations in the mast-section 11 and also through the slotel, this brace-bar serving to further stiffen the posts and prevent themfrom inclining in any direction. A windlass-drum 20 is mounted upon andsecured to the shaft 18 between thc mast-section 11 and the post 16.

Upon the upper portion of the mast-section 13 a crane 21 is held to rockby means of a pivot-bolt or the like, that loosely engages perforatedend portions Z of the crane and eye-bolts Z', that are secured iu themast-section directly above the windlass-drum 20, and,

as shown in Figs. 8 and 4, two grooved sheaves fm, and m are pivoted onthe horizontal member of the crane 21. A flexible connection, such as arope 22, is secured by one end upon the windlass-drum 20 and is extendedtherefrom upwardly, passing over the sheaves m f/n/ and hanging pendentfrom the latter.

Upon the shaft 18, between the mast-section 11 and the post 15, afriction or brake drum 23 is placed and secured, and upon the peripheryof said drum a friction-band 24 is mounted.

A treadle is pivoted near its center between the post 15 and themast-section 11, as indicated at a in Figs. 2 and 3, thus projecting twotreadle members 25 from the pivot-center toward oppositelsides of theplatform 10. On each treadle member 25 a hook o or other equivalentsecuring means is placed, these similar means being' positioned at anequal distance from the pivot a, and it will be seen that the lappedperforated ends of the friction-band 2a may have a hooked or otherdetachable engagement with either of the hook projections 0, and thus beconnected with the treadle-section it is desired to use.

Two ratchet-wheels 26 of an equal diameter, but having their teethinclined oppositely, are secured together, so that central perforationstherein are alined, and are neatly fitted upon the end of the shaft 18,that projects outside of the post 15. A handle-lever is provided for themanual rotation of the shaft 18 in either direction, as may be desired,said lever comprising a straight flat bar 27 and a correspondinglever-bar 27 The lever-bar 27 is bent laterally at p nearer one of itsends than the other, and near said bend p an obtuse angular bend p' isformed, thus producing a padp, which is secured upon the normal innerside of the lever member' 27, whereby the two members 27-27 are spacedapart. As shown in Figs. 2 and 3, a handle 27h is secured upon the endof the handle member 27 near the iiange or pad p2, so as to projectoutward at a right angle thereto, which affords convenient means formanipulating the two-part handle-lever. The other ends of the levermembers 27 27 are perforated transversely near theirextremities, saidopposite perforations being of a suitable diameter to receive the end ofthe shaft 18 that projects ,outside of' the post 15. Vhen the two-parthandlelever is loosely mounted upon the shaft 18,

an adjacent side of the lever member 27 has contact with the face of ahub that projects from the post 15 and is spaced by said hub from thepost. A pivot-bolt f7' is inserted through two opposite perforations inthe lever members 27 27 near the bend p, said bolt receiving thetransversely-jiierforated hub end portion of a pawl v", which is looselymounted thereon, and, as shown, the pawl is adapted for engaging' itsfree end or toe with either ratchet-wheel when it is disposed so as tolocate it opposite such wheel. To permit such change in engagement ofthe pawl /r with the pivot-bolt r to be readily effected, the pivotboltis held removably in place by a crosssplit key r, that engages atransverse perforation formed in the end of the bolt that projectsoutside of the lever member 27, and to dispose the pawl opposite theratchet-wheel which it is to engage a spacing-thimble fr2 is looselymounted upon the pivot-bolt between the pawl and the lever member 27 27from which the pawl is farthest spaced. The pawl 1" is provided with aheavy toe portion fr, that adapts said toe to readily fall intoengagement with the teeth of the ratchet-wheel opposite which it isdisposed, and, as shown in Figs. 2 and 3, a lateral projection fr isformed on the hub portion of the pawl, which is adapted to impinge uponan edge of either lever member 27 27" near which it may be disposed, andthus prevent the free end of the pawl from falling away too far from theteeth' of the ratchet-wheel.

1n arranging the handle lever and the ratchet-wheels for service thelatter are placed on the projecting end of the shaft 18, to-l getherwith the two-part handle-lever, between its members 27 27, and theratchetwheels are firmly secured in place on the shaft.

Assuming that the pawl fr' is arranged on the pivot-bolt fr so as to beadjacent to the TOO IIO

lever members 27, as indicated in Figs. 2 and only necessary to removethe pivot-boltr and pawl thereon and then replace the same, with thepawl turned around half-way, so as vto adapt it to engage the teeth onthe Wheel nearest the post 15 and at the Sametime change the position ofthe thimble r3. This change in relative position of the parts will adaptthe crank-handle 27 27L for rotation' from left to right and wrap therope 22 on the drum 2O in direction from right to left, so that by a'simple and quickly-effected adjustment of the details, as described, theoperator may use either hand for manipulating the crank-handle androtate the shaft 18 in accordance therewith.

It is to be understood that when using the described mechanism thetreadle member 25 that is at the right side of the shaft 18 is to beemployed for arresting the rotation of said shaft when the rope 22 isunwound by a suspended weight when the crank handle is adapted forrotationfrom right to left, and the treadle member that projects beyondthe shaft at the left-hand side thereofl is` used Vwhen the crank-leveris adapted for rotation material must be handled in a limited time.

'Ihe improved hoisting device that has been described is extremely welladapted for the hoisting' and depositing in rapid succession of a largenumber of filled bags of grain in vertical tiers` as will appear fromthe followingdescribed operation.

It will be seen that when the crank-lever 27 is raised from a pendentposition until the pawlw' by its gravity falls into engagement with theratchet-wheel 26 that is near the member 27 of the lever the manualrotation of the crank-lever from right to left will wrap up the rope 22.

Upon the pendent end of the rope 22 a pair of bag-gripping tongs 28 issecured that are formed, preferably, ofmetal-rod material,each bent toprovide a looped hook member t on its free end and an eye t on theopposite end, said eyes having a loose engagement with a ring u, that issecured upon the lower end of the rope. The tongs 28 are clasped uponop- Ordinarily the work of piling sacksA posite ends of a grain-bag, asshown in Fig.

1, and then thecrank-lever 27 is turned, as before explained, until therope 22 has been sufficiently wrapped upon the windlass-drum 2O toproperly elevate the sack or bag. The operator now treads upon theadjacent treadle member 25, thus causing the band 24 to frictionallyengage the brake-drum 23 and hold the shaft 18 and drums 23 30 fromrotating, which will preventa descent of the bag. An assistant nowswings the bag that is held suspended to a proper point for its depositand then signals the one who controls the hoisting operation to releasethe brake by removal of foot-pressure from the treadle member 25`, whichwill reverse the movement of the windlass-drum 20, owing to the pull onthe rope 22 proudced by the slight dropping movement of the sack or bag,which will so relax strain on the rope as to permit the tongs 28 to beremoved from the sack or bag after it has been placed in position. Thecrank-lever 27 27 drops into a pendent position upon its release afterthe brake has been set by footpressure on the treadle member 25, whichwill permit the pawl r' to drop away `from the ratchet-wheel 26 it hasbeen engaged with, and thus release the windlass-drum 20 for a freereverse movement of the rope under stress of the weight of'the suspendedbag, and it will be apparent that this feature of construction andoperation is very advantageous, as it obviates danger of injury thatmight result if the crank-lever were affixed upon the shaft 18 andturned with it.

In Fig. 1 the improved hoisting mechanism is shown in connection with aportable engine that may be of any preferred construction, the motorrepresented in said figure being of a well-known kind that is adapted touse gasolene as a motive agent. In this construction of the elevating'apparatus the two-part derrick-m'ast may be formed of metal Vand eachsection 111 and 13a may be tubular to give them strength and lightness.-The mast and motor, together with a tank for holding the liquid motiveagent, yare all placed in proper relative positions on theplatform 10,that is essentially similar to the platform 10, but may have greaterarea. In this case the windlassdrum 20 is driven by friction or othergear directly from the main shaft o of the motor and winds up the ropeor other flexible connection 22Xl by the rotation of the drum in onedirection, a release of the drum from the motor-gear permitting it torevolve freely in an opposite direction, this release being effected byany suitable means. (Not shown.)

Upon the windlass-shaft 18u at one side of the windlass-drum 20 abrake-drum 23 is secured, whereon the friction-band 24 is mounted,having the lapped pendent ends thereofloosely secured upon the trcadle25, that is conveniently positioned on the plat- IIO form 10a forreception of foot-pressure.

In operating the power-actuated hoisting apparatus the motor is put inmotion, and after a filled sack or bag A has been gripped by the tongs28 direct connection of the motor with the windlass-drum 20 is effectedthrough a frictional engagement of the friction-wheels B B, respectivelylocated on contiguous ends of the windlass-shaft 18 and the main shaft oof the motor. Thiswill wrap up the rope 22 until the bag has been liftedto a proper height. Then the treadle 25 is depressed to set thefriction-brake, and the motor is detached from the windlass-shaft, so asto per- "mit the latter to rotate freely in a reverse direction fromthat received from the motor. The assistant now moves the bag into aproper position by swinging' it through the medium of the crane 21, andthe bag is dropped upon others in a tier by release of thefriction-brake upon removal of foot-pressure on the treadle 25.

It will be apparent that the improved hoisting device, whether operatedby a motor or by hand-power, is very convenient, rapid in service,labor-saving, and is equally well adapted for piling bagged material intiers in a warehouse or placing such material on cars or the like fortransportation.

Having thus described my invention, I claim as new and desire to secureby Letters Patent- 1. A hoisting' device comprising' a movable platform,a derricl-mast formed in two telescoping sections and erected on theplatform, the lower section of the mast having box form,

the upper section having'a longitudinal slot.

extended from the lower end and a longitudinal groove in one side, arope fastened at one end upon the lower end of the upper section andextending up in the groove, said rope extending out through the upperend of the lower section of the mast and hanging over a sheavecarried bysaid lower mast-section, a rotatably-supported windla'ss-shaft passingthrough the lower mast-section and occupying the slot in the uppersection thereofI when it is lowered, a drum on the shaft, a crane on theupper section of the mast, a flexible connection fast on the drum andextended up and over supports on the crane, and means for rotating theshaft.

2. In a hoisting device of the character described, the combination witha rotatably-su pported windlass-shaft, and ratchet-wheels secured uponthe shaft, having their teeth inclined oppositely, of a crank-leverhaving parallel members that embrace the ratchet-wheels and are looselymounted upon the shaft, a weight-pawl pivoted changeably on thecranklever so as to be adapted to engage either ratchet-wheel, and meansfor supporting the pawl inclined away'from the ratchet-wheels.

3. In a hoisting' device of the character described, the combinationwith a verticallysupported derrick-mast, a horizontally-supportedrotatable windlassshaft, a friction brake-drum secured on the shaft atone side of the mast, a windlass-drum thereon at the other side of saidmast, a swinging support on the upper portion of the mast. and aflexible connection extended from the windlassdrinn up to and over theswinging support so as to hang pendent therefrom, of a pliable bandmounted on the friction brake-drum and having its lapped ends extendeddownwardly, a treadle-lever pivoted near its center on a suitablesupport so as to provide two integral members therefor that extendoppositely from the pivot, and means for detachably securing the ends ofthe pliable band upon either member of the treadle.

4. ln a hoisting device of the character described, the combination witha platform and a derrick-mast comprising a hollow lower section fixedupon the platform, andan upper section slidably occupying the lowersection, of means for raising and holding the upper mast-section at adesired point in the fixed lower section comprising the formation of alongitudinal groove in a sidewall of the upper mast-section, abracket-supported pulley secured opposite a slot formed in a side wallof the lower mast-section near its upper end and opposite the groove inthe Lipper section, a rope or the like fastened at one end in the lowerend of the groove and loosely bedded therein, the upper portion of saidrope passing out of the slot and resting on the pulley, and a stop-boltinsertible in any one of a series of spaced perforations formedtransversely in the lower mast-section, said bolt affording support forthe lower end of the slidable mast-section.-

5. A hoisting device, comprising a mast formed of telescoping sections,the upper section having its lower end longitudinally slotted, means foradjusting' and holding the upper mast-section in position, a revolublewindlass-shaft extending through the lower mastsection and the slot ofthe upper mast-section, a drum on the shaft, a crane on the uppermast-section, and a rope secured to the drum and passing over supportson the crane.

6. In a hoisting device, the combination with a mast, a crane at theupper end of the mast, a drum, and a rope on the drum and passing' oversupports on the crane, of a brakedrum on the shaft of the hoisting-drum,a brake-band on the brake-drum, and a treadle pivoted at its center toform two treadle members, each member being provided with means wherebythe ends of the brake-band may be attached thereto.

7. In a hoisting device, the combination of a hoisting-drum,ratchet-wheels on the shaft of the drum and having their teethoppositely inclined,'a crank-lever loosely mounted on the drum-shaft, apawl interchangeably pivoted to IOO IIO

IIS

the crank-lever to permit it to engage either ratchet-wheel, abrake-drum on the hoistingdrum shaft, a brake-'band on said drum, and atreadle pivoted at its center to form two tre-edle members, each memberbeing provided with means whereby the ends of the brakeband may bedetaehably secured thereto.

